Lpc2000

Hello Friends,

Interrupt problem in LPC2106.
I am using IAR EMBEDDED WORKBENCH.The Timer Interrupt is not 
responding.

Simply for Half an hour it typing only SET.
Its not typing Timer Interrupted. 
I can't able to find any mistake.
When i worked with the Simulator it works fine. Its correctly 
entering data into the reg.


This is the code.
#pragma language=extended
#include "ma_tgt.h"    
#include "ma_sfr.h"    
#include "iolpc210x.h" 
#include <inarm.h>  
#include "ma_scb.h" 
#include "ma_uart0.h"
#include "ma_pcb.h"     
#include "stdio.h"
#include "timer.h"
#include "LPC21XX.H"                          

extern void init_timer (void);

static void DefDummyInterrupt()
{}

__irq __arm void TIMER0 (void)  {

    MA_PutString_UART0("Timer Interrupted");
    T0IR = 1;                                   
    VICVectAddr = 0;                            
  }


void init_timer (void)
 {
  MEMMAP = 2;
  VICProtection = 0;
  VICIntEnClear = 0xffffffff;
  VICDefVectAddr = (unsigned int)&DefDummyInterrupt;
  T0TCR = 0; 
  T0PC = 0; 
  T0CCR = 0;
  T0EMR = 0;
  T0MR0 = 0xFFFF;                              
  T0MCR = 3;                                  
  VICVectAddr0 = (unsigned int)TIMER0;        
  VICVectCntl0 = 0x20 | 4;                    
  VICIntEnable = 0x00000010;                  
  T0TCR = 1;                                  
}

void main(void)
{
	MA_Reset_SCB();
	MA_Reset_PCB();
	MA_Init_UART0();
        MA_Reset_UART0();
        init_timer();
for(;;)	
{
	MA_PutChar_UART0(0xD);
	MA_PutChar_UART0(0xA);
	MA_PutChar_UART0(0xD);
	MA_PutChar_UART0(0xA);
	MA_PutString_UART0("SET");
	MA_PutChar_UART0(0xD);
	MA_PutChar_UART0(0xA);
        for(S8 i=0;i<10;i++)	
	Sleep(135000);
}	
                                                 
}

Kindly clarify my doubt.

with regards,
Raj

Raj,

Attached is a working code from ARM_UCOS port for
LPC210x. The main difference is that this does not use
the VIC, instead software distribution from the IRQ
handler. In your case the Timer itself is not firing,
hence this shouldn\ufffdt matter.

Cheers,
-Mike.

static void __vT0Interrupt()
{
    rT0IR = BIT_IR_MR0;

    OSTimeTick();
}

#define T0_DIV 3
void FRMWRK_vStartTicker(U32 wTicksPerSec)
{
    // setup Timer 1 to count forever
    rT0TCR = BIT_TCR_RESET;             // reset &
disable timer 0
    rT0PR  = T0_DIV-1;                  // set the
prescale divider
    rT0MR0 = (PCLK/T0_DIV)/wTicksPerSec;// set the
match register 0
    rT0MCR = (BIT_MCR_MR0_I|BIT_MCR_MR0_R);
    rT0CCR = 0;                         // disable
compare registers
    rT0EMR = 0;                         // disable
external match register

    pISR_TIMER0 = (U32)__vT0Interrupt;
    INT_ENABLE(IRQ, BIT_TIMER0);

    rT0TCR = BIT_TCR_ENABLE;            // enable
timer 0
}


--- rockraj_2003 <rockraj_2003@...> wrote:
> 
> Hello Friends,
> 
> Interrupt problem in LPC2106.
> I am using IAR EMBEDDED WORKBENCH.The Timer
> Interrupt is not 
> responding.
> 
> Simply for Half an hour it typing only SET.
> Its not typing Timer Interrupted. 
> I can't able to find any mistake.
> When i worked with the Simulator it works fine. Its
> correctly 
> entering data into the reg.
> 
> 
> This is the code.
> #pragma language=extended
> #include "ma_tgt.h"    
> #include "ma_sfr.h"    
> #include "iolpc210x.h" 
> #include <inarm.h>  
> #include "ma_scb.h" 
> #include "ma_uart0.h"
> #include "ma_pcb.h"     
> #include "stdio.h"
> #include "timer.h"
> #include "LPC21XX.H"                          
> 
> extern void init_timer (void);
> 
> static void DefDummyInterrupt()
> {}
> 
> __irq __arm void TIMER0 (void)  {
> 
>     MA_PutString_UART0("Timer Interrupted");
>     T0IR = 1;                                   
>     VICVectAddr = 0;                            
>   }
> 
> 
> void init_timer (void)
>  {
>   MEMMAP = 2;
>   VICProtection = 0;
>   VICIntEnClear = 0xffffffff;
>   VICDefVectAddr = (unsigned int)&DefDummyInterrupt;
>   T0TCR = 0; 
>   T0PC = 0; 
>   T0CCR = 0;
>   T0EMR = 0;
>   T0MR0 = 0xFFFF;                              
>   T0MCR = 3;                                  
>   VICVectAddr0 = (unsigned int)TIMER0;        
>   VICVectCntl0 = 0x20 | 4;                    
>   VICIntEnable = 0x00000010;                  
>   T0TCR = 1;                                  
> }
> 
> void main(void)
> {
> 	MA_Reset_SCB();
> 	MA_Reset_PCB();
> 	MA_Init_UART0();
>         MA_Reset_UART0();
>         init_timer();
> for(;;)	
> {
> 	MA_PutChar_UART0(0xD);
> 	MA_PutChar_UART0(0xA);
> 	MA_PutChar_UART0(0xD);
> 	MA_PutChar_UART0(0xA);
> 	MA_PutString_UART0("SET");
> 	MA_PutChar_UART0(0xD);
> 	MA_PutChar_UART0(0xA);
>         for(S8 i=0;i<10;i++)	
> 	Sleep(135000);
> }	
>                                                  
> }
> 
> Kindly clarify my doubt.
> 
> with regards,
> Raj
> 
> 
> 

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